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1 | #!/bin/sh |
2 | # genscripts.sh - generate the ld-emulation-target specific files | |
3 | # | |
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4 | # Usage: genscripts.sh srcdir libdir exec_prefix \ |
5 | # host target target_alias default_emulation \ | |
6 | # native_lib_dirs this_emulation tool_dir | |
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7 | # |
8 | # Sample usage: | |
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9 | # genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib /usr/local \ |
10 | # sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 \ | |
11 | # "" sun3 sparc-sun-sunos4.1.3 | |
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12 | # produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c |
13 | ||
14 | srcdir=$1 | |
15 | libdir=$2 | |
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16 | exec_prefix=$3 |
17 | host=$4 | |
18 | target=$5 | |
19 | target_alias=$6 | |
20 | EMULATION_LIBPATH=$7 | |
21 | NATIVE_LIB_DIRS=$8 | |
22 | EMULATION_NAME=$9 | |
23 | shift 9 | |
24 | # Can't use ${1:-$target_alias} here due to an Ultrix shell bug. | |
25 | if [ "x$1" = "x" ] ; then | |
26 | tool_lib=${exec_prefix}/${target_alias}/lib | |
27 | else | |
28 | tool_lib=${exec_prefix}/$1/lib | |
29 | fi | |
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30 | |
31 | # Include the emulation-specific parameters: | |
32 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh | |
33 | ||
34 | if test -d ldscripts; then | |
35 | true | |
36 | else | |
37 | mkdir ldscripts | |
38 | fi | |
39 | ||
40 | # Set the library search path, for libraries named by -lfoo. | |
41 | # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used. | |
42 | # Otherwise, the default is set here. | |
43 | # | |
44 | # The format is the usual list of colon-separated directories. | |
45 | # To force a logically empty LIB_PATH, do LIBPATH=":". | |
46 | ||
47 | if [ "x${LIB_PATH}" = "x" ] ; then | |
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48 | # Cross, or native non-default emulation not requesting LIB_PATH. |
49 | LIB_PATH= | |
50 | ||
252b5132 | 51 | if [ "x${host}" = "x${target}" ] ; then |
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52 | case " $EMULATION_LIBPATH " in |
53 | *" ${EMULATION_NAME} "*) | |
54 | # Native, and default or emulation requesting LIB_PATH. | |
55 | LIB_PATH=/lib:/usr/lib | |
56 | if [ -n "${NATIVE_LIB_DIRS}" ]; then | |
57 | LIB_PATH=${LIB_PATH}:${NATIVE_LIB_DIRS} | |
58 | fi | |
59 | if [ "${libdir}" != /usr/lib ]; then | |
60 | LIB_PATH=${LIB_PATH}:${libdir} | |
61 | fi | |
62 | if [ "${libdir}" != /usr/local/lib ] ; then | |
63 | LIB_PATH=${LIB_PATH}:/usr/local/lib | |
64 | fi | |
65 | esac | |
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66 | fi |
67 | fi | |
68 | ||
69 | # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib. | |
70 | LIB_PATH=${LIB_PATH}:${tool_lib} | |
71 | ||
72 | LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'` | |
73 | ||
74 | # Generate 5 or 6 script files from a master script template in | |
75 | # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6 | |
76 | # script files is actually used depends on command line options given | |
77 | # to ld. (SCRIPT_NAME was set in the emulparams_file.) | |
78 | # | |
79 | # A .x script file is the default script. | |
80 | # A .xr script is for linking without relocation (-r flag). | |
81 | # A .xu script is like .xr, but *do* create constructors (-Ur flag). | |
82 | # A .xn script is for linking with -n flag (mix text and data on same page). | |
83 | # A .xbn script is for linking with -N flag (mix text and data on same page). | |
84 | # A .xs script is for generating a shared library with the --shared | |
85 | # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the | |
86 | # emulation parameters. | |
87 | ||
88 | SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}} | |
89 | ||
90 | # Determine DATA_ALIGNMENT for the 5 variants, using | |
91 | # values specified in the emulparams/<emulation>.sh file or default. | |
92 | ||
93 | DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}" | |
94 | DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}" | |
95 | DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}" | |
96 | DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}" | |
97 | DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" | |
98 | ||
99 | LD_FLAG=r | |
100 | DATA_ALIGNMENT=${DATA_ALIGNMENT_r} | |
101 | DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" | |
102 | (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ | |
103 | ldscripts/${EMULATION_NAME}.xr | |
104 | ||
105 | LD_FLAG=u | |
106 | DATA_ALIGNMENT=${DATA_ALIGNMENT_u} | |
107 | CONSTRUCTING=" " | |
108 | (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ | |
109 | ldscripts/${EMULATION_NAME}.xu | |
110 | ||
111 | LD_FLAG= | |
112 | DATA_ALIGNMENT=${DATA_ALIGNMENT_} | |
113 | RELOCATING=" " | |
114 | (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ | |
115 | ldscripts/${EMULATION_NAME}.x | |
116 | ||
117 | LD_FLAG=n | |
118 | DATA_ALIGNMENT=${DATA_ALIGNMENT_n} | |
119 | TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}} | |
120 | (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ | |
121 | ldscripts/${EMULATION_NAME}.xn | |
122 | ||
123 | LD_FLAG=N | |
124 | DATA_ALIGNMENT=${DATA_ALIGNMENT_N} | |
125 | (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ | |
126 | ldscripts/${EMULATION_NAME}.xbn | |
127 | ||
128 | if test -n "$GENERATE_SHLIB_SCRIPT"; then | |
129 | LD_FLAG=shared | |
130 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} | |
131 | CREATE_SHLIB=" " | |
132 | # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. | |
133 | (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ | |
134 | ldscripts/${EMULATION_NAME}.xs | |
135 | fi | |
136 | ||
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137 | for i in $EMULATION_LIBPATH ; do |
138 | test "$i" = "$EMULATION_NAME" && COMPILE_IN=true | |
139 | done | |
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140 | |
141 | # Generate e${EMULATION_NAME}.c. | |
142 | . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em |